Paper-shell cartridge.



W. E. KEPLINGER.

PAPER SHELL CARTRIDGE wwcanou FILED ocr 26.1914.

1 ,1 84,753. Patented Hayfi is a section taken on .WARBEN E. KEPLINGER, OF CINCINNATI, OHIO.

rarnasnnu. canrnmcn Specification of Letters Patent.

Application filed October 26, 1914. Serial No. 868,575.

inforcing the paper tube portion of the cartridge, and especially the point of the latter at and near the top edge of the metallic cap portion.

Other objects will-appear hereinafter.

The invention consists in substantia ly the combination and arrangement of parts hereinafter described and claimed, and will be best understood by reference to the accompanying drawing, forming a part of this specification, and in which Fi re 1 is a longitudinal section of a cartridge embodyin my invention; Fig. 2 line 2-2 of Fig. 1; Fig. 3 is a plan view of a sheet of paper provided with reinforcement used in the manufacture of my improved shell, Fig. 3 being on a smaller scale than Figs. 1' and 2; Fig. 4 is a section taken on the line 44 of Fig. 3, but having its thickness exaggerated; Fig. 5 is a perspective view of a cartridge, having portions of it torn up to show its construction; Fig. 6 is an enlarged fragmental section ofa sheet ofmaterial from which a cartridge embodying my invention is produced, and in which the reinforcing member is embedded in the sheet; and ig. 7 is a similar view showinga different form of reinforcin member.

the use of paper shell cartridges, the paper tube portion is frequently broken at the point where it meets the top edge of the metallic cup portion by the explosion of the charge in the cartrid e. This breakin of the pa er shell, whic is ordinarily ca led cut-o ,'causes considerable inconvenience in the use of this class of cartridges, and of course prevents their being ,re-used and so makes them unduly expensive. Various methods have been adopted to prevent cutofi's. in paper shell cartrid es, which have been more orlesssuccessful, ut not entirely so. To overcome this fault, I reinforce the paper shell at the point where the cut-off is likely to occur.

I find that a material such as a fabric 01 cotton, linen, silk, wire mesh or the like makes a desirable reinforcing member. A thin sheet of metal, fiber, or the like, eithe: imperforate or foraminate, may also be em ployed with equally good results. Wire or threads (not shown may also be em bedded in the paper 0 the tubes to forn the reinforcement therefor. I prefer t embed the reinforcing element in the pape of the tube, but when so desired it ma placed on the inner side or outer side 0 th latter, without departing from m inven tion. The reinforcement is not s own a disposed on the inner or outer side of th cartridge in the drawing, but it will b readily understood how this. may be a pliei from perusing the methodof embed ng i in the paper of the tube.

In the improved tube of my cartridge,

preferably use a sheet of paper 10, or othe suitable substance, Fig. 3, and secure .a reir forcing element 11 of fabric, or the like, t the sheet. The reinforcing element is prei erably of a width and disposed on the shee in a manner so that when the sheet and reir forcing element are rolled and formed int a tube in the usual manner, the reinforcin element will cover at least one of the conv( lutions of the sheet and be embedded in th tube between the convolutions of such tub For a convenient and economical manufai ture of the cartridges, I find that the reiI forcing element may be disposed longitud: nall of the sheet, and, when rolled and or on lines substantially indicated by the dotte lines 12 in Fig. 3, form tubes of pro e lengths for the cartridges. However, w e so esired, the reinforcin element 11 ma be made co-extensive wit the sheet 10, c it may be made in such sizes that when a plied to the sheet it will only extend over suflicient part of the tube to protect the po: tion thereof where the cut-ofi's occur.

The tubes after having-been prepared 1 described above, are secured between tl metallic cup member 13 and the base we 14 of the cartridge, in the usual manne The metallic cup 13 and base wad 14 may 1 of conventional or any desired constructio: When so constructed, the reinforcing e1 ment 11 provides a means whereby the SP1 tube or shell of the cartridge is strengt em in a manner to prevent the explosionsof tl Patented May30, 1916.

charges in the cartridges from breaking or cutting off the paper tube at a point near the top edge of the metallic cup 13.

The reinforcing element 11 may be secured to the sheet 10 in any desired manner. In Fig. 3, I have indicated a construction in which the reinforcing element is secured to the sheet 10 by means of an adhesive. In'

Fig. 6, I have shown the reinforcing element as having been pressed into the sheet of paper, such as by running the reinforcing material through the rolls of the papermaking machine during the manufacture of thfnpaper. In Fig. 7, I have indicated the r orcing material formed of a solid sheet and applied to the sheet 10.

While I have illustrated and described the preferred form of construction of my" invention, I do not desire to be limited to the precise details described and shown, but desire to avail myself of such variations and changes as come within the scope of the appended claims. v

I claim:,

1. A cartridge comprisin a paper tube 28 made up of a sheet dispose in a plurality of convolutions secured together; a cloth reinforcing member positioned between two convolutions of the paper sheet; and a cup secured to and inc osing one end of the 30 paper tube.

2. A cartridge comprising a tube made up of a sheet of paper disposed in a plua, vralit of convolutions and a narrow sheet of 0 0th extending around and pressed into one of the intermediate convolutions of the paper sheet; and a cup secured to and inclosing one end of the tube.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 22nd day of October A. D. 1914.

WARREN E. KEPLINGER. Witnesses:

F. C. Toms, S. E. D. KEPLINGER. 

